Method of forming an electronic component using ink

ABSTRACT

The present invention relates to an ink for electronic component used in various electronic appliances such as laminate ceramic capacitor, LC filter, and complex high frequency component, a manufacturing method of electronic component by using this ink for electronic component, and an ink jet device, and is intended to present an ink for electronic component capable of re-dissolving and baking a ceramic green sheet, a manufacturing method of electronic component by using this ink for electronic component, and an ink jet device. To achieve this object, by manufacturing an electronic component by an ink jet method using an ink for electronic component comprising water or organic solvent, and one of metal powder, ceramic powder, magnetic powder, glass powder, and resistor powder with particle size of 0.001 μm or more to 10 μm or less, dispersed in this water or organic solvent, by 1 wt. % or more to 80 wt. % or less, at viscosity of 2 poise or less, the invention presents an ink for electronic component of high concentration likely to form precipitates or aggregates, and presents a manufacturing method of electronic component enhanced in the quality because the electronic component is printed when necessary for manufacturing, manufactured in a short time, and printed at high precision. At the same time, the product cost is lowered, the yield is enhanced, and an ink jet device enhanced in reliability is presented.

TECHNICAL FIELD

[0001] The present invention relates to an ink for electronic componentused in various electronic appliances such as laminate ceramiccapacitor, LC filter, and complex high frequency component, amanufacturing method of electronic component by using this ink forelectronic component, and an ink jet device.

BACKGROUND ART

[0002] In a laminate ceramic electronic component which is aconventional example of electronic component, an electrode ink isprinted and formed in a specified pattern as an internal electrode on aceramic green sheet composed of ceramic powder, polyvinyl butyral resin,and a slight portion of plasticizer, and a specified number of sheetsare laminated, cut, and baked, and an external electrode is formed. Assuch electrode ink, various types have been proposed for screenprinting, including, for example, an ink for internal electrode oflaminate ceramic capacitor for screen ink prepared by kneading nickelmetal powder by three rolls as disclosed in Japanese Laid-open PatentNo. 5-205970, and an electrode ink for screen ink using ceramic powdercoated with palladium proposed in Japanese Laid-open Patent No.5-275263.

[0003] Further in Japanese Laid-open Patent No. 5-55075, a conductorpaste containing nickel oxide is proposed for screen printingtechnology. In Japanese Laid-open Patent No. 5-90069, it is proposed toadd rosin to a conductive paste for screen. Also in Japanese Laid-openPatent No. 5-226179, it is proposed to add scaly powder to a conductorpaste for screen. In Japanese Laid-open Patent No. 5-242724, similarly,a conductive paste for screen by adding organic phosphoric acid isproposed. In Japanese Laid-open Patent No. 5-275263, coating zirconiapowder with nickel or other base metal, a conductive paste for screenprinting is proposed. In Japanese Laid-open Patent No. 5-299288, usingpolyether urethane resin, a manufacturing method of laminate ceramiccapacitor for screen printing of internal electrode is proposed.

[0004] In the manufacturing method of laminate ceramic electroniccomponent such as laminate ceramic capacitor, the internal electrode hasbeen printed and formed by screen printing, but in order to lower thecost and enhance the performance, a gravure printing process is proposedin Japanese Patent Publication No. 5-25381 or Japanese PatentPublication No. 8-8200. In U.S. Pat. No. 5,101,319, a calenderprocessing of electrode by gravure printing for laminate ceramiccapacitor is proposed.

[0005] In the conventional electrode inks (whether for screen printingor for gravure, etc.), since an organic solvent is used as the mainsolvent, when printed on a ceramic green sheet, the ceramic green sheetmay be swollen or dissolved again by the organic solvent contained inthe electrode ink. Accordingly, as far as the thickness of the ceramicgreen sheet is 20 μm or more, it rarely causes shorting, but when thethickness of the ceramic green sheet is less than 15 μm, the shortingprobability is very high.

[0006] To solve this problem, hitherto, a manufacturing method ofceramic electronic component by direct gravure printing on the greensheet has been proposed, for example, as disclosed in Japanese PatentPublication No. 8-8200. In this case, however, the shorting, probabilityis high when the ceramic green sheet is thin, and accordingly JapanesePatent Publication No. 5-25381 proposes a method of transferring agravure printed pattern on the ceramic green sheet because the ceramicgreen sheet may be swollen or damaged when the electrode is directlyprinted on the ceramic green sheet. Thus, regardless of the printingmethod, in the conventional electrode ink, the ceramic green sheet wasdamaged, and the shorting problem was caused in thin ceramic greensheets of 15 μm or less.

[0007] In the conventional ink jet device, it was designed to print byfilling an ink cartridge of a commercial ink jet printer with an ink.When printed by this ink jet device, the ink often precipitated orgathered near the ink jet nozzle for injecting the ink, causing theproblem of ink clogging.

[0008] The invention is to solve the problems of the prior arts, and itis hence an object thereof to present an ink for electronic componentcapable of preventing re-dissolving of ceramic green sheet and baking, amanufacturing method of electronic component by using this ink forelectronic component, and an ink jet device.

SUMMARY OF THE INVENTION

[0009] To achieve the object, the invention comprises water or organicsolvent, and one of metal, powder, ceramic powder, magnetic powder,glass powder, or resistor powder with particle size of 0.001 μm or moreto 10 μm or less, dispersed in this water or organic solvent, by 1 wt. %or more to 80 wt. % or less, at viscosity of 2 poise or less.

[0010] Or it comprises water or organic solvent, and a resin dispersedin this water or organic solvent, by 1 wt. % or more to 80 wt. % orless, at viscosity of 2 poise or less.

[0011] The method comprises the steps of repeating a plurality of timesof a process of forming a specified ink pattern on a ceramic green sheetby an ink jet method by using an ink prepared by dispersing metal powderwith particle size of 0.002 μm or more to 10 μm or less, in at leastwater or organic solvent, by 1 wt. % or more to 80 wt. % or less, atviscosity of 2 poise or less, laminating a plurality of the ceramicgreen sheets forming this ink pattern to form a raw laminated body ofceramic, cutting to specified shape and baking, and forming an externalelectrode.

[0012] Or the method comprises the steps of repeating a plurality oftimes of a process of forming a specified first ink pattern on a ceramicgreen sheet by an ink jet method by using a first ink prepared bydispersing metal powder with particle size of 0.002 μm or more to 10 μmor less, in at least water or organic solvent, by 1 wt. % or more to 80wt. % or less, at viscosity of 2 poise or less, and forming a specifiedsecond ink pattern by an ink jet method by using a second ink preparedby dispersing ceramic powder with particle size of 0.002 μm or more to10 μm or less, in at least water or organic solvent, by 1 wt. % or moreto 80 wt. % or less, at viscosity of 2 poise or less, laminating aplurality of the ceramic green sheets forming these ink patterns to forma raw laminated body of ceramic, cutting to specified shape and baking,and forming an external electrode.

[0013] Further, the method comprises the steps of repeating a pluralityof times of a process of forming a specified ink pattern on a ceramicgreen sheet by a gravure printing method by using an ink prepared bydispersing metal powder with particle size of 0.001 μm or more to 10 μmor less, in at least water or organic solvent, by 1 wt. % or more to 80wt. % or less, at viscosity of 2 poise or less, laminating a pluralityof the ceramic green sheets forming this ink pattern to form a rawlaminated body of ceramic, cutting to specified shape and baking, andforming an external electrode.

[0014] Or the method comprises the steps of repeating a plurality oftimes of a process of forming a specified first ink pattern on a ceramicgreen sheet by an ink jet method by using a first ink prepared bydispersing metal powder with particle size of 0.001 μm or more to 10 μmor less, in at least water or organic solvent, by 1 wt. % or more to 80wt. % or less, at viscosity of 2 poise or less, forming a specifiedsecond ink pattern by an ink jet method by using a second ink preparedby dispersing ceramic powder with particle size of 0.001 μm or more to10 μm or less, in at least water or organic solvent, by 1 wt. % or moreto 80 wt. % or less, at viscosity of 2 poise or less on the uppersurface of the ceramic green sheet so as to cover this first inkpattern, and forming a ceramic layer integrated with the ceramic greensheet, laminating a desired plurality of the ceramic green sheets havingthe ceramic layer to form a raw laminated body of ceramic, cutting tospecified shape and baking, and forming an external electrode.

[0015] Also, the method comprises the steps of forming a pair of upperelectrode layers on a confronting upper side of a substrate by an inkjet method, forming a resistance layer so as to straddle over the upperelectrode layers by an ink jet method by using an ink prepared bydispersing resistance powder with particle size of 0.001 μm or more to10 μm or less, in at least water or organic solvent, by 1 wt. % or moreto 80 wt. % or less, at viscosity of 2 poise or less, and forming aglass projective layer at least to cover this resistance layer by an inkjet method by using an ink prepared by dispersing glass powder withparticle size of 0.001 μm or more to 10 μm or less, in at least water ororganic solvent, by 1 wt. % or more to 80 wt. % or less, at viscosity of2 poise or less.

[0016] Also, the method comprises the steps of forming a pair of upperelectrode layers on a confronting upper side of a substrate by an inkjet method, forming a resistance layer so as to straddle over the upperelectrode layers by an ink jet method by using an ink prepared bydispersing resistance powder with particle size of 0.001 μm or more to10 μm or less, in at least water or organic solvent, by 1 wt. % or moreto 80 wt. % or less, at viscosity of 2 poise or less, and forming aglass projective layer at least to cover this resistance layer by an inkjet method by using an ink prepared by dispersing a resin, in at leastwater or organic solvent, by 1 wt. % or more to 80 wt. % or less, atviscosity of 2 poise or less.

[0017] Also, the method comprises the steps of injecting a magnetic inkprepared by dispersing magnetic powder with particle size of 0.001 Am ormore to 10 μm or less, in at least water or organic solvent, by 1 wt. %or more to 80 wt. % or less, at viscosity of 2 poise or less, and anelectrode ink alternately in a specified pattern by an ink jet method,forming a block body of a three-dimensional structure having theelectrode ink printed inside in a coil form so as to cover the electrodeink with the magnetic ink, and cutting this block body into a specifiedform and baking.

[0018] Also, the method comprises the steps of forming a ceramic greensheet having an electrode pattern by repeating a plurality of times of aprocess of injecting an electrode ink by an ink jet method from theupper surface of a ceramic green sheet having a base film with apenetrating via hole and forming an electrode pattern on the uppersurface of this ceramic green sheet and in the via hole, and a processof filling at least the via hole with the electrode pattern and peelingoff the base film, laminating a desired number of the ceramic greensheets having the electrode pattern so as to connect between the upperand lower electrode patterns electrically to form a raw laminated bodyof ceramic, cutting into a specified shape-and baking, and forming anexternal electrode.

[0019] The invention also presents an apparatus comprising an ink tankfilled with an ink, a first tube for sucking the ink in this ink tankthrough a suction mechanism, an ink injection unit connected to thisfirst tube for injecting a required amount of the ink, and a second tubeconnected to this ink injection unit for circulating the ink notinjected from the ink injection unit into the ink tank.

[0020] Also, the apparatus comprises a dispersing machine filled with anink, a first tube for sucking the ink in this dispersing machine througha, suction mechanism, an ink injection unit connected to this first tubefor injecting a required amount of the ink, and a second tube connectedto this ink injection unit for circulating the ink not injected from theink injection unit into the dispersing machine.

BRIEF DESCRIPTION OF THE DRAWINGS

[0021]FIG. 1 is a diagram explaining a manufacturing method of alaminate ceramic electronic component in embodiment 1 of the invention,

[0022]FIG. 2 is a diagram explaining an ink jet device in embodiment 1of the invention,

[0023]FIG. 3 is a diagram showing the relation between the number ofcontinuous prints and the ink deposit for comparing the printingstability between the ink jet device in embodiment 1 of the inventionand a conventional ink jet device,

[0024]FIG. 4 is a diagram explaining a manufacturing method of alaminate ceramic electronic component in embodiment 2 of the invention,

[0025]FIG. 5 is a diagram explaining a manufacturing method of alaminate ceramic electronic component in embodiment 3 of the invention,

[0026]FIG. 6 is a diagram explaining a manufacturing method of alaminate ceramic electronic component in other embodiment, and

[0027]FIG. 7 is a diagram explaining a manufacturing method of a coil inembodiment 4, of the invention.

BEST NODE OF CARRYING OUT THE INVENTION

[0028] (Embodiment 1)

[0029] An ink for electronic component in embodiment 1 of the inventionis described below.

[0030] The ink for electronic component in embodiment 1 comprises wateror organic solvent, and metal powder with particle size of 0.001 μm ormore to 10 μm or less, dispersed in this water or organic solvent, by 1wt. % or more to 80 wt. % or less, at viscosity of 2 poise or less.

[0031] First, to 100 g of Pd powder with particle size of about 3 μm,150 g of organic solvent or water containing 1 g of additive or resin isadded.

[0032] Herein, as the metal powder, silver, palladium, platinum,palladium, copper, or the like is added. As the additive, phthalatesolvent such as butyl phthalate, or polyethylene oxide, or the like isadded. As the resin, by adding cellulose resin, vinyl resin, petroleumresin, or the like, the adhesion of the print coat film is improved, andthe strength of the ink is increased after being dried. As the organicsolvent, alcohol such as ethyl alcohol or isobutyl alcohol, acetone,ketone such as methyl ethyl ketone, ester such as butyl acetate,hydrocarbon such as naphtha, or the like is added. As required,moreover, by adding dispersant, such as fatty, acid ester, polyhydricalcohol fatty acid ester, alkyl glyceryl ether or its fatty acid,various lecithin derivatives, propylene glycol fatty acid ester,glycerin fatty acid ester, polyexythylene glycerin fatty acid ester,polyglycerin fatty acid ester, sorbitan fatty acid ester,polyoxyethylene alkyl ether, or the like, the dispersion of the powderis improved, and precipitation by re-aggregation of powder can beprevented.

[0033] Next, the mixture is dispersed for 3 hours by using zirconiabeads of 0.5 mm in diameter.

[0034] Then, passing through a filter of 5 μm in diameter, an ink isprepared as an electrode ink of organic solvent system at viscosity of 2poise.

[0035] Herein, the particle size of metal powder is defined to be 0.001μm or more because it is hard to exist as metal in ordinary state ifless than 0.001 μm. In particular, when nickel, copper, silver,aluminum, zinc or other base metal or their alloy powder was analyzed byusing a surface analyzer by ESCA, not only the surface layer but alsothe inside of the powder was degenerated into oxide or hydroxide ofceramic. It is defined to be 10 μm or less because if more than 10 μm,the metal powder is likely to precipitate in the ink. The content of themetal powder is 1 wt. % or more because electric conductivity is notobtained after baking the ink if less than 1 wt. %. It is 80 wt. % orless because the ink is, likely to precipitate if more than 85 wt. %.The viscosity is 2 poise or less because if the viscosity is too high,the ink cannot be injected stably from the ink injection port, of if theink is injected, the ink is too sticky, and the printing precision isimpaired.

[0036] The ink for electronic component in embodiment 1 is an organicsolvent system, but a water-based ink for electronic component may bealso prepared. In the case of water-based ink for electronic component,to 100 g of Ni powder with particle size of about 0.5 μm, 150 g of wateror water-based (or water-soluble) organic solvent containing 1 g ofadditive or resin is added.

[0037] Next, the mixture is dispersed for 3 hours by using zirconiabeads of 0.5 mm in diameter.

[0038] Then, passing through a filter of 5 μm in diameter, an ink isprepared as a water-based electrode ink at viscosity of 2 poise.

[0039] Herein, as the water-based (or water-soluble) organic solventsethylene glycol, glycerin, polyethylene glycol, or the like is added. Asthe resin, by adding a water-soluble resin, such as methyl cellulose,carboxy methyl cellulose, other cellulose resin, polyvinyl alcohol,other vinyl resin, styrene butadiene rubber, other latex resin, or thelike, the adhesion of the print coat film is improved, and the strengthof the ink after drying is enhanced. As the dispersant, by addingvarious lecithin derivatives, propylene glycol fatty acid ester,polyexythylene glycerin fatty acid ester, polyglycerin fatty acid ester,sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester,polyethylene glycol fatty acid ester, polyoxyethylene alkyl ether,polycarboxylic acid, various soaps, or the like, the dispersion of thepowder is improved, and precipitation by re-aggregation of powder can beprevented.

[0040] Concerning thus prepared ink for electronic component, amanufacturing method of an electronic component by using this ink forelectronic component is explained below while referring to the drawing.In embodiment 1, as an example of electronic component, a laminateceramic electronic component is explained.

[0041]FIG. 1 is a drawing explaining a manufacturing method of laminateceramic electronic component in embodiment 1 of the invention.

[0042] First, dielectric powder mainly composed of barium titanate withparticle size of 0.5 μm conforming to X7B characteristic of JIS isdispersed together with butyral resin, phthalic acid plasticizer, andorganic solvent to obtain a dielectric slurry, and this slurry is passedthrough a filter of 10 μm, and is applied on a resin film, and anorganic ceramic green sheet 1 of 30 μm in thickness is prepared.

[0043] Next, as shown in FIG. 1, ink droplets 5 of the ink forelectronic component 4 (not shown) explained in embodiment 1 for formingthe internal electrode are injected on the upper surface of this ceramicgreen sheet 1 from an ink injection unit 3 of an ink jet device 12described below of which printing quality is 720 dpi. By the inkdroplets 5, an ink pattern 6 is formed on the upper surface of theceramic green sheet 1.

[0044] While peeling off the resin film from the ceramic green sheet 1having the ink pattern 6 formed in the above step, tens of sheets of theceramic green sheet 1, including the highest layer and lowest layer ifnecessary, are pressed and bonded from above and beneath by a pressmachine, and a raw laminated body of ceramic is formed.

[0045] Finally, the raw laminated body of ceramic is cut to a specifiedsize and baked, and an external electrode to be connected electricallyto the ink pattern 6 which is the internal electrode is formed, and alaminate ceramic electronic component is manufactured.

[0046] The ink jet device used for forming the ink pattern as theinternal electrode of thus manufactured laminate ceramic electroniccomponent is described below while referring to the drawing.

[0047]FIG. 2 is a drawing explaining the ink jet device in embodiment 1of the invention.

[0048] In the drawing, reference numeral 11 is an ink tank, which isfilled with the ink for electronic component 4 of embodiment 1 forforming the internal electrode. This ink tank 11 has a first tube 14 oftransparent or translucent resin or the like for sucking the ink 2through a suction mechanism 13 such as pump at its intermediateposition. The side of the first tube 14 opposite to the ink tank 11 sideis connected to the ink injection unit 3. The ink injection unit 3injects a necessary amount of the ink 2 supplied from the first tube 14outside toward the object of printing in a form of ink droplets 5. Theside of the ink injection unit 3 opposite to the first tube 14 side isconnected to a second tube 17 of transparent or translucent resin or thelike. The second tube 17 sucks the ink 2 not injected by the inkinjection unit 3 through an adjustment suction mechanism 18 such aspump, and circulates into the ink tank 11. The adjustment suctionmechanism 18 is to stabilize the ink injection amount by adjusting thepressure of the ink 2 at the ink injection unit 3.

[0049] Thus composed ink jet device is attached to the portioncorresponding to the ink cartridge provided in a commercial ink jetprinter, and is used as an ink jet printing machine.

[0050] The printing stability of thus composed ink jet device iscompared with that of a conventional ink jet device.

[0051]FIG. 3 is a diagram showing the relation of the number ofcontinuous prints and the ink deposit for comparing the printingstability between the ink jet device in embodiment 1 of the inventionand the conventional ink jet device. In the diagram, the white circlesrefer to the conventional ink jet device for printing withoutcirculating the ink, in which the ink deposit decreased suddenly as thenumber of prints increased, and the ink injection unit was clogged after6 prints, no further prints were made. On the other hand, in the ink jetdevice for circulating the ink of embodiment 1 indicated by darkcircles, stable printing is possible after 100 prints.

[0052] This is because the ink is passed into the first tube 14, and thepowder in the ink 2 undergoes not only the Brownian movement, but alsothe shearing motion (or shear rate) by the Hagen-Poiseuille law so thatthe ink running speed is zero in the tube inner wall while the shearrate is maximum in the central part of the tube, and therefore the ink 2neither precipitates nor re-aggregates.

[0053] Moreover, by installing a filter in the first tube 14 between thesuction mechanism 13 and the ink injection unit 3 of embodiment 1, andfiltering the ink 2 just before printing, aggregates and sediments ofthe ink 2 formed in the ink tank 11 can be removed completely, andstable printing is realized if the ink is likely to re-aggregate.

[0054] When the ink tank 11 is a dispersing machine such as ball millusing Dyno Mill of Shinmaru Enterprises Corporation or similar rotarystand, stable printing is realized for a long time even if the ink ispoor in dispersion.

[0055] When using an ink of high thixotropy, if the diameter of thefirst and second tubes 14, 17 is large, a flow region free from shearingforce called plug flow occurs in the central part, and the aggregatesare likely to collect in this plug flow region, and therefore thediameter of the first and second tubes 14, 17 should be 10 mm or less,and the flow rate should be 0.1 cc/min or more and 10 L/min or less. Ifthe flow rate is less than 0.1 cc/min, the shearing motion in the tubeis too small, and powder components in the ink may aggregate orprecipitate. If the flow rate exceeds 10 L/min, the ink pressure in thetube is too high, and the ink may spontaneously eject or ooze out fromthe ink injection unit of the ink jet device, and the printing qualitymay be lowered.

[0056] In embodiment 1, the ink 2 not injected from the ink injectionunit 3 is sucked and always circulated into the ink tank 11, butcirculation may be stopped while the ink 2 is injected from the inkinjection unit 3, that is, during printing. In this case, when the inkinjection unit 3 is printing in a single direction, at the time ofcarriage return, the ink may be circulated when the ink injection unit 3moves in both directions. The first and second tubes are transparent ortranslucent, so that the ink state in the tubes can be observed.Flexible tubes are easy to handle.

[0057] Since the electrode ink is a water-based ink, shorting can beprevented if the thickness of the ceramic green sheet 1 is less than 15μm.

[0058] (Embodiment 2)

[0059] An ink for electronic component in embodiment 2 of the inventionis described below.

[0060] The ink for electronic component in embodiment 2 comprises wateror organic solvent, and ceramic powder with particle size of 0.001 μm ormore to 10 μm or less, dispersed in this water or organic solvent, by 1wt. % or more to 80 wt. % or less, at viscosity of 2 poise or less.

[0061] First, to 100 g of ceramic powder with particle size of 0.001 μmor more to 10 μm or less, 200 g of organic solvent or water containing 1g of additive or resin is added.

[0062] Herein, as the ceramic powder, alumina, barium titanate,strontium titanate, the like is added. As the additive, phthalatesolvent such as butyl phthalate, or polyethylene oxide, or the like isadded. As the resin, by adding cellulose resin, vinyl resin, petroleumresin, or the like, the adhesion of the print coat film is improved, andthe strength of the ink is increased after being dried. As the organicsolvent, alcohol such as ethyl alcohol or isobutyl alcohol, acetone,ketone such as methyl ethyl ketone, ester such as butyl acetate,hydrocarbon such as naphtha, or the like is added. As required,moreover, by adding dispersant, such as fatty acid ester, polyhydricalcohol fatty acid ester, alkyl glyceryl ether or its fatty acid,various lecithin derivatives, propylene glycol fatty acid ester,glycerin fatty acid ester, polyexythylene glycerin fatty acid ester,polyglycerin fatty acid ester, sorbitan fatty acid ester,polyoxyethylene alkyl ether, or the like, the dispersion of the powderis improved, and precipitation by re-aggregation of powder can beprevented.

[0063] Next, the mixture is dispersed for about 3 hours by usingzirconia beads of 0.5 mm in diameter.

[0064] Then, passing through a filter of 5 μm in pore size, a ceramicink of organic solvent system is prepared at viscosity of 0.1 poise.

[0065] Herein, the particle size of ceramic powder is defined to be0.001 μm or more because the cost is high if less than 0.001 μm, and itis 10 μm or less because the ceramic powder is likely to precipitate inthe ink if more than 10 μm. The content of the ceramic powder is 1 wt. %or more because defects by interlayer peeling or pitting are likely tooccur after baking the ink if, less than 1 wt. %. It is 80 wt. % or lessbecause the ink is likely to precipitate if more than 85 wt. %. Theviscosity is 2 poise or less because if the viscosity is too high, theink cannot be injected stably from the ink injection port, of if the inkis injected, the ink is too sticky, and the printing precision isimpaired.

[0066] The ceramic ink for electronic component in embodiment 2 is anorganic solvent system, but a water-based ceramic ink for electroniccomponent may be also prepared. In the case of water-based ceramic inkfor electronic component, to 100 g of ceramic powder with particle sizeof about 0.5 μm, 100 g of water or water-based (or water-soluble)organic solvent containing 1 g of additive or resin is added.

[0067] Next, the mixture is dispersed for about 3 hours by usingzirconia beads of 0.5 mm in diameter.

[0068] Then, passing through a filter of 5 μm in pore size, awater-based electrode ink is prepared at viscosity of 2 poise.

[0069] Herein, as the water-based (or water-soluble) organic solvent,ethylene glycol, glycerin, polyethylene glycol, or the like is added. Asthe resin, by adding a water-soluble resin, such as methyl cellulose,carboxy methyl cellulose, other cellulose, resin, polyvinyl alcohol,other vinyl resin, styrene butadiene rubber, other latex resin, or thelike, the adhesion of the print coat film is improved, and the strengthof the ink after drying is enhanced. As the dispersant, by addingvarious lecithin derivatives, propylene glycol fatty acid ester,polyexythylene glycerin fatty acid ester, polyglycerin fatty acid ester,sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester,polyethylene glycol fatty acid ester, polyoxyethylene alkyl ether,polycarboxylic acid, various soaps, or the like, the dispersion of thepowder is improved, and precipitation by re-aggregation of powder can beprevented.

[0070] Concerning thus prepared ink for electronic component, amanufacturing method of an electronic component by using this ink forelectronic component is explained below while referring to the drawing.In embodiment 2, as an example of electronic component, a laminateceramic electronic component is explained.

[0071]FIG. 4 is a drawing explaining a manufacturing method of laminateceramic electronic component in embodiment 2 of the invention.

[0072] First, dielectric powder mainly composed of barium titanate withparticle size of 0.5 μm conforming to X7B characteristic of JIS isdispersed together with butyral resin, phthalic acid plasticizer, andorganic solvent to obtain a dielectric slurry, and this slurry is passedthrough a filter of 10 μm in pore, size, and is applied on a resin film,and an organic ceramic green sheet 1 of 30 μm in thickness is prepared.

[0073] Next, as shown in FIG. 4, first ink droplets 24 of the first inkfor electronic component 23 explained in embodiment 1 for forming theinternal electrode are injected on the upper surface of this ceramicgreen sheet 1 from a first ink injection unit 22 of a first ink jetdevice 21 described below of which printing quality is 720 dpi. By thefirst ink droplets 24, a first ink pattern 25 is formed on the uppersurface of the ceramic green sheet 1 as the internal electrode. Thisprocess of forming the first ink pattern 25 is same as explained inembodiment 1.

[0074] Simultaneously when forming the first ink pattern 25, second inkdroplets 34 of the second ink for electronic component 33 explained inembodiment 2 for forming the ceramic pattern are injected on the uppersurface of this ceramic green sheet 1 from a second ink injection unit32 of a second ink jet device 31 described below of which printingquality is 720 dpi. By the second ink droplets 34, a second ink pattern35 is formed on the upper surface of the ceramic green sheet 1 as theinternal electrode. The second ink jet device 31 used herein has he sameconstitution as the ink jet device explained in embodiment 1. Herein,by, using water-based ink at least in one or both of the first ink forelectronic component 23 and second ink for electronic component 33,shorting can be prevented if the thickness of the ceramic green sheet 1is less than 15 μm.

[0075] While peeling off the resin film from the ceramic green sheet 1having the first and second ink patterns 25, 35 formed in the abovestep, tens of sheets of the ceramic green sheet 1, including the highestlayer and lowest layer if necessary, are pressed and bonded from aboveand beneath by a press machine, and a raw laminated body of ceramic isformed.

[0076] Finally, the raw laminated body of ceramic is cut to a specifiedsize and baked, and an external electrode to be connected electricallyto the first ink pattern 25 which is the internal electrode is formed,and a laminate ceramic electronic component is manufactured.

[0077] (Embodiment 3)

[0078] An ink for electronic component in embodiment 3 of the inventionis described below.

[0079] In the ink for electronic component in embodiment 3, the ink forelectronic component for forming the electrode pattern explained inembodiment 1 and embodiment 2 is explained as a first ink, and the inkfor electronic component for forming the ceramic pattern is called asecond ink. Herein, the first ink, and second ink may be of eitherorganic solvent system or water system, which may be selected asrequired.

[0080] A manufacturing method of an electronic component by using theink for electronic component in embodiment 3 of the invention isexplained below while referring to the drawing. In embodiment 3, as anexample of electronic component, a laminate ceramic electronic componentis explained.

[0081]FIG. 5 is a drawing explaining a manufacturing method of laminateceramic electronic component in embodiment 3 of the invention.

[0082] First, as shown in FIG. 5(a), first ink droplets 43 of the firstink (not shown) are injected toward the upper surface of a ceramic greensheet 42 on the upper surface of a base film 41 from a first inkinjection unit (not shown) of a first ink jet device (not shown), and afirst ink pattern 44 is formed.

[0083] Next, as shown in FIG. 5(b), second ink droplets 51 of the secondink (not shown) are injected toward the upper surface of the ceramicgreen sheet 42 on the upper surface of the base film 41 for covering atleast the first ink pattern 44 from a second ink injection unit (notshown) of a second ink jet device (not shown), and a second ink pattern52 is formed. At this time, in the ceramic green sheet 42, in theportion corresponding to the upper surface of the first ink pattern 44,the second ink droplets 51 are injected excessively as required, and asecond ink pattern protrusion 53 is formed.

[0084] When dried, as shown in FIG. 5(c), the second ink patternprotrusion 53 is buried in the portion corresponding to the uppersurface of the first ink pattern 44 on the ceramic green sheet 42, andthe upper surface of the second ink pattern 52 becomes smooth, so that aceramic layer 54 integrated with the ceramic green sheet 42 is formed.

[0085] This process is repeated by a plurality of times.

[0086] Then, as shown in FIG. 5(d), while peeling off the base film 41from the integrated ceramic layer 54, it is laminated, pressed andbonded to the upper surface of other integrated ceramic layer 54, and araw laminated body of ceramic 61 is formed.

[0087] Finally, peeling off the base film 41, the raw laminated body ofceramic is cut to a specified size and baked, and an external electrodeto be connected electrically to the first ink pattern 44 which is theinternal electrode is formed, and a laminate ceramic electroniccomponent is manufactured.

[0088] In this embodiment, the first ink pattern 44 is formed by usingthe ink jet device, but it may be also formed by gravure printing. Inthis gravure printing, as shown in FIG. 6, in an ink well 45 containingthe ink 2, a gravure plate 47 having ink printing pattern holes 46 isrotated, and a specified amount of ink 2 is adjusted by a doctor blade48 in the ink printing pattern holes 46. Then the gravure plate 47 isdisposed so as to contact with the ceramic green sheet 42 having thebase film 41, and it is moved while pressing with a plate cylinder 49,so that the first ink pattern 44 may be formed.

[0089] (Embodiment 4)

[0090] An ink for electronic component in embodiment 4 of the inventionis described below.

[0091] The ink for electronic component in embodiment 4 is the electrodeink, which is the ink for electronic component for forming the electrodepattern explained in embodiment 1 and embodiment 2, and the ink may beof either organic solvent system or water system, which may be selectedas required.

[0092] A manufacturing method of an electronic component by using theink for electronic component in embodiment 4 of the invention isexplained below while referring to the drawing. In embodiment 4, as anexample of electronic component, a coil is explained.

[0093]FIG. 7 is a, drawing explaining a manufacturing method of coil inembodiment 4 of the invention.

[0094] First, as shown in FIG. 7(a), ink droplets 75 of the electrodeink (not shown) are injected toward the upper surface of a ceramic greensheet 74 having a base film 73 penetrating through via holes 72 fixed ona stage 71 from an ink injection unit (not shown) of an ink jet device(not shown), and an electrode pattern 76 is formed. At this time, theelectrode pattern 76 has a desired pattern on the upper surface of theceramic green sheet 74, and filling up at least the via holes 72.

[0095] Next, as shown in FIG. 7(b), after plugging the via holes 72 inthe ceramic green sheet 74, it is dismounted from the stage 71, and thebase film 73 is peeled off.

[0096] This process is repeated by a plurality of times, and the ceramicgreen sheet 74 having the desired electrode pattern 76 is manufactured.

[0097] Then, as shown in FIG. 7(c), the specified number of the ceramicgreen sheets 74 manufactured in the above process are laminated so as toconnect the upper and lower electrode patterns 76 electrically, andpressed and integrated, and a raw laminated body of ceramic is formed.

[0098] Finally, the raw laminated body of ceramic is cut to a specifiedsize and baked, and an external electrode to be connected electricallyto the electrode patterns 76 of the highest and lowest layers is formed,and a coil is manufactured.

[0099] (Embodiment 5)

[0100] An ink for electronic component in embodiment 5 of the inventionis described below.

[0101] The ink for electronic component in embodiment 5 is an resistanceink comprising water or organic solvent, and resistance powder withparticle size of 0.001 μm or more to 10 μm or less, dispersed in thiswater or organic solvent, by 1 wt. % or more to 80 wt. % or less, atviscosity of 2 poise or less.

[0102] It is also a glass ink comprising water or organic solvent, andglass powder with particle size of 0.001 μm or more to 10 μm or less,dispersed in this water or organic solvent, by 1 wt. % or more to 80 wt.% or less, at viscosity of 2 poise or less.

[0103] To prepare the ink for electronic component as resistance ink,first, to 100 g of resistance powder with particle size of 0.001 μm ormore to 10 μm or less, 200 g of organic solvent or water containing 1 gof additive or resin is added.

[0104] Herein, as the resistance powder, silver, palladium,silver-palladium, other metal material, ruthenium oxide or otherrutile-type oxide, pyrochloroxide as Pb₂Ru₂O₆, the like is added, sothat the sheet resistance may be 0.1 to 10 MΩ/□. As the additive,phthalate solvent such as butyl phthalate, or polyethylene oxide, or thelike is added. As the resin, by adding cellulose resin, vinyl resin,petroleum resin, or the like, the adhesion of the print coat film isimproved, and the strength of the ink is increased after being dried. Asthe organic solvent, alcohol such as ethyl alcohol or isobutyl alcohol,acetone, ketone such as methyl ethyl ketone, ester such as butylacetate, hydrocarbon such as naphtha, or the like is added. As required,moreover, by adding dispersant, such as fatty acid ester, polyhydricalcohol fatty acid ester, alkyl glyceryl ether or its fatty acid,various lecithin derivatives, propylene glycol fatty acid ester,glycerin fatty acid ester, polyexythylene glycerin fatty acid ester,polyglycerin fatty acid ester, sorbitan fatty acid ester,polyoxyethylene alkyl ether, or the like, the dispersion of the powderis improved, and precipitation by re-aggregation of powder can beprevented.

[0105] Next, the mixture is dispersed for 3 hours by using zirconiabeads of 0.5 mm in diameter.

[0106] Then, passing through a filter of 5 μm in pore size, an ink isprepared as a resistance ink of organic solvent system at viscosity of0.05 poise.

[0107] This ink for electronic component is of organic solvent system,but it may be prepared as water system as in embodiment 2.

[0108] Then, to prepare the resistance ink, first, to 100 g of glasspowder with particle size of 0.001 μm or more to 10 μm or less, 100 g oforganic solvent or water containing 1 g of additive or resin is added.

[0109] Herein, as the glass powder, Pb—SiO₂—B₂O₃ is added. As theadditive, bismuth oxide, copper oxide, aluminum oxide, titanium oxide,zinc oxide, magnesium oxide, manganese oxide, or the like is added toenhance the adhesion of alumina substrate and resistance element, and itis also used for adjusting the TCR. As the additive for negativetransformation of TCR, titanium, tungsten, molybdenum, niobium,antimony, tantalum, or the like is used. As the additive for positivetransformation of TCR, copper, cobalt or the like is used. As the resin,by adding cellulose resin, vinyl resin, petroleum resin, or the like,the adhesion of the print coat film is improved, and the strength of theink is increased after being dried. As the organic solvent, alcohol suchas ethyl alcohol or isobutyl alcohol, acetone, ketone such as methylethyl ketone, ester such as butyl acetate, hydrocarbon such as naphtha,or the like is added. As required, moreover, by adding dispersant, suchas fatty acid ester, polyhydric alcohol fatty acid ester, alkyl glycerylether or its fatty acid, various lecithin derivatives, propylene glycolfatty acid ester, glycerin fatty acid ester, polyexythylene glycerinfatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acidester, polyoxyethylene alkyl ether, or the like, the dispersion of thepowder is improved, and precipitation by re-aggregation of powder can beprevented.

[0110] Next, the mixture is dispersed for 3 hours by using zirconiabeads of 0.5 mm in diameter.

[0111] Then, passing through a filter of 5 μm in pore size, an ink isprepared as a glass ink of organic solvent system at viscosity of 0.05poise.

[0112] This ink for electronic component is of organic solvent system,but it may be prepared as water system as in embodiment 2.

[0113] Concerning thus prepared ink for electronic component, amanufacturing method of an electronic component by using this ink forelectronic component is explained below. In embodiment 5, as an exampleof electronic component, a square chip resistor is explained.

[0114] First, near the vertical slot of a sheet substrate havingvertical and lateral slots, the ink for forming electrode explained inembodiment 1 or embodiment 2 is applied and an upper electrode layer isformed by an ink jet device.

[0115] To straddle over the upper electrode layer, a resistance elementis formed by using the resistance ink explained in this embodiment 5 by,the ink jet device.

[0116] At least to cover this resistance element, a glass protectivelayer is formed by using the glass ink explained in this embodiment 5.

[0117] Dividing the sheet substrate along the lateral slot, a sideelectrode layer is formed on the split side to connect electrically tothe upper electrode.

[0118] Finally, dividing into individual pieces, a plating layer isformed to cover the side electrode as required, and a square chipresistor is manufactured.

[0119] The ink jet device used herein in the same ink jet device used inembodiment 1, and its explanation is omitted.

[0120] In this way, by manufacturing the electronic component by the inkjet method using the resistance ink, since the resistance value can beadjusted preliminarily, trimming is not necessary, and the resistancepatterns individually different in resistance value can be formed easilyonly by changing the resistance ink, so that multiple types of productsin small quantity can be manufactured in a short time. Moreover, bymanufacturing an electronic component by the ink jet method using theaforesaid resistance ink and glass ink, it is easy to print in duplicateby controlling the dimensional error of substrate, dimensional balanceor thickness dispersion, and hence it is easy to adjust the degree offreedom of pattern change, and thickness and precision of ink coat film.

[0121] (Embodiment 6)

[0122] An ink for electronic component in embodiment 6 of the inventionis described below.

[0123] The ink for electronic component in embodiment 6 is a magneticink comprising water or organic solvent, and magnetic powder withparticle size of 0.001 μm or more to 10 μm or less, dispersed in thiswater or organic solvent, by 1 wt. % or more to 80 wt. % or less, atviscosity of 2 poise or less.

[0124] To prepare ink for electronic component as magnetic ink, first to100 g of magnetic powder with particle size of 0.001 μm or more to 10 μmor less, 100 g of organic solvent or water containing 1 g of additive orresin is added.

[0125] Herein, as the magnetic powder, nickel-zinc system is added. Asthe additive, phthalate solvent such as butyl phthalate, or polyethyleneoxide, or the like is added. As the resin, by adding cellulose resin,vinyl resin, petroleum resin, or the like, the adhesion of the printcoat film is improved, and the strength of the ink is increased afterbeing dried. As the organic solvent, alcohol such as ethyl alcohol orisobutyl alcohol, acetone, ketone such as methyl ethyl ketone, estersuch as butyl acetate, hydrocarbon such as naphtha, or the like isadded. As required, moreover, by adding dispersant, such as fatty acidester, polyhydric alcohol fatty acid ester, alkyl glyceryl ether or itsfatty acid, various lecithin derivatives, propylene glycol fatty acidester, glycerin fatty acid ester, polyexythylene glycerin fatty acidester, polyglycerin fatty acid ester, sorbitan fatty acid ester,polyoxyethylene alkyl ether, or the like, the dispersion of the powderis improved, and precipitation by re-aggregation of powder can beprevented.

[0126] Next, the mixture is dispersed for 3 hours by using zirconiabeads of 0.5 mm in diameter.

[0127] Then, passing through a filter of 5 μm in pore size, an ink isprepared as a magnetic ink of organic solvent system at viscosity of0.05 poise.

[0128] Concerning thus prepared ink for electronic component, amanufacturing method of an electronic component by using this ink forelectronic component is explained below. In embodiment 6, as an exampleof electronic component, an LC filter is explained.

[0129] First, on the upper surface of the supporting substrate, theaforesaid magnetic ink and the electrode ink of embodiment 1 orembodiment 2 are alternately injected to a specified pattern by an inkjet device, and the electrode ink is printed inside in a coil form, andthis electrode ink is covered, by the magnetic ink, thereby forming athree-dimensional structural block,

[0130] Finally, this block is cut into a specified shape, baked, andformed into an LC filter.

[0131] When manufacturing a high frequency filter or an electroniccomponent for small power of 1 A or less, nickel-zinc magnetic powder ispreferably used, and further by adding copper or the like, it is morebeneficial because the baking temperature can be lowered and thesintering performance may be enhanced. When manufacturing parts forpower source or electronic components for use at large current, it ispreferred to use manganese-zinc magnetic powder.

[0132] (Embodiment 7)

[0133] An ink for electronic component in embodiment 7 of the inventionis described below.

[0134] The ink for electronic component in embodiment 7 is a resin inkcomprising water or organic solvent, and resin dispersed in this wateror organic solvent, by 1 wt. % or more to 80 wt. % or less, at viscosityof 2 poise or less.

[0135] To prepare ink for electronic component as resin ink, bisphenol Aepoxy resin with average molecular weight of 350 used as resin isdiluted in methyl ketone used as organic solvent, at viscosity of 0.05poise.

[0136] Then, passing through a filter of 5 μm in pore size, an ink isprepared as a resin ink.

[0137] Using this resin ink instead of the glass protective layer inembodiment 5 in the ink jet device, it can be cured at low temperature,and an electronic component small in resistance fluctuation ismanufactured.

[0138] Further, by adding ceramic powder with particle size of 1 μm orless as the filler to this resin ink, the coefficient of expansion canbe adjusted in relation to the device or electronic component, and thehumidity resistance can be enhanced.

[0139] Also by adding metal powder, the ink for electronic componentbecomes conductive, and by injecting by the ink jet device, the circuitboard and electronic component can be adhered instead of the soldermounting process.

INDUSTRIAL APPLICABILITY

[0140] As described herein, the invention presents an ink for electroniccomponent of high concentration likely to form precipitates oraggregates, and presents a manufacturing method of electronic componentenhanced in the quality because the electronic component is printed whennecessary for manufacturing, manufactured in a short time, and printedat high precision. At the same time, the product cost is lowered, theyield is enhanced, and an ink jet device enhanced in reliability ispresented.

What is claimed is:
 1. An ink for electronic component comprising wateror organic solvent, and one powder of metal powder, ceramic powder,magnetic powder, glass powder, and resistor powder, said powder havingparticle size of 0.001 μm or more to 10 μm or less, said powder beingdispersed in this water or organic solvent, by 1 wt. % or more to 80 wt.% or less, at viscosity of 2 poise or less.
 2. An ink for electroniccomponent comprising water or organic solvent, and a resin dispersed insaid water or organic solvent, by 1 wt. % or more to 80 wt. % or less,at viscosity of 2 poise or less.
 3. An ink for electronic component ofclaim 2, wherein said ceramic powder or metal powder is dispersed.
 4. Anink for electronic component of claim 1 or 2, wherein said organicsolvent is either of organic system or of water system.
 5. Amanufacturing method of electronic component comprising the steps of:repeating a plurality of times of a process of forming a specified inkpattern on a ceramic green sheet by an ink jet method by using an inkprepared by dispersing metal powder with particle size of 0.001 μm ormore to 10 μm or less, in at least water or organic solvent, by 1 wt. %or more to 80 wt. % or less, at viscosity of 2 poise or less, laminatinga plurality of the ceramic green sheets forming this ink pattern to forma raw laminated body of ceramic, cutting to specified shape and baking,and forming an external electrode.
 6. A manufacturing method ofelectronic component comprising the steps of: repeating a plurality oftimes of a process of forming a specified first ink pattern on a ceramicgreen sheet by an ink jet method by using a first ink prepared bydispersing metal powder with particle size of 0.001 μm or more to 10 μmor less, in at least water or organic solvent, by 1 wt. % or more to 80wt. % or less, at viscosity of 2 poise or less, and forming a specifiedsecond ink pattern by an ink jet method by using a second ink preparedby dispersing ceramic powder with particle size of 0.001 μm or more to10 μm or less, in at least water or organic solvent, by 1 wt. % or moreto 80 wt. % or less, at viscosity of 2 poise or less, laminating aplurality of the ceramic green sheets forming these ink patterns to forma raw laminated body of ceramic, cutting to specified shape and baking,and forming an external electrode.
 7. A manufacturing method ofelectronic component comprising the steps of: repeating a plurality oftimes of a process of forming a specified ink pattern on a ceramic greensheet by a gravure printing method by using an ink prepared bydispersing metal powder with particle size of 0.001 μm or more to 10 μmor less, in at least water or organic solvent, by 1 wt. % or more to 80wt. % or less, at viscosity of 2 poise or less, laminating a pluralityof the ceramic green sheets forming this ink pattern to form a rawlaminated body of ceramic, cutting to specified shape and baking, andforming an external electrode.
 8. A manufacturing of electroniccomponent comprising the steps of: repeating a plurality of times of aprocess of forming a specified first ink pattern on a ceramic greensheet by an ink jet method by using a first ink prepared by dispersingmetal powder with particle size of 0.001 μm or more to 10 μm or less, inat least water or organic solvent, by 1 wt. % or more to 80 wt. % orless, at viscosity of 2 poise or less, forming a specified second inkpattern by an ink jet method by using a second ink prepared bydispersing ceramic powder with particle size of 0.001 μm or more to 10μm or less, in at least water or organic solvent, by 1 wt. % or more to80 wt. % or less, at viscosity of 2 poise or less on the upper surfaceof the ceramic green sheet so as to cover this first ink pattern, andforming a ceramic layer integrated with the ceramic green sheet, andlaminating a desired plurality of the ceramic green sheets having theceramic layer to form a raw laminated body of ceramic, cutting tospecified shape and baking, and forming an external electrode.
 9. Amanufacturing method of electronic component comprising the steps of:forming a pair of upper electrode layers on a confronting upper side ofa substrate by an ink jet method, forming a resistance layer so as tostraddle over the upper electrode layers by an ink jet method by usingan ink prepared by dispersing resistance powder with particle size of0.001 μm or more to 10 μm or less, in at least water or organic solvent,by 1 wt. % or more to 80 wt. % or less, at viscosity of 2 poise or less,and forming a glass projective layer at least to cover this resistancelayer by an ink jet method by using an ink prepared by dispersing glasspowder with particle size of 0.001 μm or more to 10 μm or less, in atleast water or organic solvent, by 1 wt. % or more to 80 wt. % or less,at viscosity of 2 poise or less.
 10. A manufacturing method ofelectronic component comprising the steps of: forming a pair of upperelectrode layers on a confronting upper side of a substrate by an inkjet method, forming a resistance layer so as to straddle over the upperelectrode layers by an ink jet method by using an ink prepared bydispersing resistance powder with particle size of 0.001 μm or more to10 μm or less, in at least water or organic solvent, by 1 wt. % or moreto 80 wt. % or less, at viscosity of 2 poise or less, and forming aglass projective layer at least to cover this resistance layer by an inkjet method by using an ink prepared by dispersing a resin, in at leastwater or organic solvent, by 1 wt. % or more to 80 wt. % or less, atviscosity of 2 poise or less.
 11. A manufacturing method of electroniccomponent comprising the steps of: injecting a magnetic ink prepared bydispersing magnetic powder with particle size of 0.001 μm or more to 10μm or less, in at least water or organic solvent, by 1 wt. % or more to80 wt. % or less, at viscosity of 2 poise or less, and an electrode inkalternately in a specified pattern by an ink jet method, forming a blockbody of a three-dimensional structure having the electrode ink printedinside in a coil form so as to cover the electrode ink with the magneticink, and cutting this block body into a specified form and baking.
 12. Amanufacturing of electronic component comprising the steps of: forming aceramic green sheet having an electrode pattern by repeating a pluralityof times of a process of injecting an electrode ink by an ink jet methodfrom the upper surface of a ceramic green sheet having a base film witha penetrating via hole and forming an electrode pattern on the uppersurface of this ceramic green sheet and in the via hole, and a processof filling at least the via hole with the electrode pattern and peelingoff the base film, laminating a desired number of the ceramic greensheets having the electrode pattern so as to connect between the upperand lower electrode patterns electrically to form a raw laminated bodyof ceramic, cutting into a specified shape and baking, and forming anexternal electrode.
 13. A manufacturing method of electronic componentof any one of claims 5 to 12, wherein said organic solvent is either oforganic system or of water system.
 14. An ink jet device comprising: anink tank filled with an ink, a first tube for sucking the ink in thisink tank through a suction mechanism, an ink injection unit connected tothis first tube for injecting a required amount of the ink, and a secondtube connected to this ink injection unit for circulating the ink notinjected from the ink injection unit into the ink tank.
 15. An ink jetdevice comprising: a dispersing machine filled with an ink, a first tubefor sucking the ink in this dispersing machine through a suctionmechanism, an ink injection unit connected to this first tube forinjecting a required amount of the ink, and a second tube connected tothis ink injection unit for circulating the ink not injected from theink injection unit into the dispersing machine.
 16. An ink jet device ofclaim 14 or 15, wherein an adjustment suction mechanism is connected tosaid second tube.
 17. An ink jet device of claim 14 or 15, wherein afilter is provided in said first tube.
 18. An ink jet device of claim 14or 15, wherein said first and second tubes are transparent ortranslucent.
 19. An ink jet device of claim 14 or 15, wherein thediameter of said first and second tubes is 10 mm or less, and the flowrate is 0.1 cc/min or more to 10 L/min or less.